US 12,605,813 B2Granted

Pump plug removal and installation tool

AssigneePatriot Pump Tools LLC

InventorsAdrian Sandoval, Jesse Guerra

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Abstract

Plug removal and installation tools and methods of operating such to remove suction port plugs and discharge port plugs from a fluid end on a pump (e.g., hydraulic fracturing positive displacement pump) and to insert new plugs are disclosed. The plug removal tool includes a reaction bar assembly, a drive assembly, and a threaded rod assembly. The plug removal tool may be operated by rotating the drive assembly using a high torque, powered impact tool to reduce the time, labor, and fatigue associated with manually removing plugs from a pump using a traditional manually operated plug removal tool. The drive assembly is rotatable independently of the threaded rod assembly and reaction bar assembly. Rotation of the drive assembly results in linear movement of the threaded rod assembly to extend and retract the threaded rod assembly relative to the drive assembly and reaction bar assembly.

Claims20

Dependent claims

A tool for removing or installing a plug in a fluid end of a positive displacement pump, the tool comprising:

a shaft comprising a first inner bore and a threaded bore disposed forwardly of the first inner bore, and having a first longitudinal axis;
a reaction bar disposed forwardly of the shaft and comprising a second inner bore having at least one flat surface;
a rod disposed at least partially inside the first inner bore, through the threaded bore, and at least partially forward of shaft, the rod comprising a first section extending longitudinally and adjacent to a second section, wherein the first section comprises threads configured to engage with the threaded bore and the second section comprises a flat surface configured to engage with the at least one flat surface on the second inner bore;
a drive fitting disposed at or near a rear end of the shaft, the drive fitting configured to receive a drive end of an external power tool to rotate the drive fitting and the shaft;
wherein the engagement of the first section and the threaded bore allows linear movement of the rod along the longitudinal axis when the drive fitting and the shaft are rotated;
and
wherein the engagement of the second section and the at least one flat surface on the second inner bore prevent rotational movement of the rod when the drive fitting and the shaft are rotated.

4 more elements

A plug tool, comprising:

a reaction bar assembly comprising a hub having a central bore therethrough, an anti-rotation plate affixed to a forward surface of the hub and having a central bore axially aligned with the central bore of the hub, a reaction bar comprising two U-shaped bars affixed to the hub on each of a left side and a right side of the hub, and a handle disposed at least partially within and affixed to the hub;
a drive assembly comprising a threaded inner bore, a non-threaded upper bore, and a drive fitting at least partially disposed in the non-threaded upper bore, wherein at least part of the drive assembly comprises a cylindrical shape that is complementary to and comprises a clearance fit with an inner bore of the handle, and wherein the drive assembly is at least partially disposed within the handle and the hub and allowed to freely rotate within the handle and the hub;
and
a threaded rod assembly comprising a threaded rod, wherein the threaded rod is threaded into the inner bore of the drive assembly and extends from the inner bore through the central bores of the hub and the anti-rotation plate;
wherein rotation of the drive assembly via an external device imparts rotation to the drive assembly to selectively cause linear extension and retraction of the threaded rod assembly.

2 more elements

Dependencies are inferred from the claim text.